The distance between the points $P(x_1, y_1)$ and $Q(x_2, y_2)$ is given by:
A$(x_2 - x_1) + (y_2 - y_1)$
B$\sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}$
C$(x_2 - x_1)^2 + (y_2 - y_1)^2$
D$\sqrt{x_1 x_2 + y_1 y_2}$
Answer & Solution
Correct answer: B. $\sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}$
Standard distance formula: $\sqrt{(x_2-x_1)^2 + (y_2-y_1)^2}$.
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